History Channel (Television network) 18 Time-Life Books 18 Lewis, Meriwether, 1774-1809 13 New Video Group 13 Arts and Entertainment Network 11 Dyer, Julia, 11 Burns, Ken, 1953- 10 Clark, William, 1770-1838 10 Ives, Stephen 10 Catlin, George, 1796-1872 9 Remington, Frederic, 1861-1909 8 American Philosophical Society 7 Amon Carter Museum of Western Art 7 Denver Art Museum 7 Etulain, Richard W. 7 Hafen, Le Roy Reuben, 1893-1985 7 Michael, Renee, 7 University of Nebraska--Lincoln. Center for Great Plains Studies 7 Adams, Ansel, 1902-1984 6 Bullfrog Films 6 Irving, Washington, 1783-1859 6 Thwaites, Reuben Gold, 6 University of Virginia. Library. Electronic Text Center 6 Buffalo Bill Historical Center 5 Carradine, David 5 De Voto, Bernard Augustine, 1897-1955 5 Hafen, Ann Woodbury, 1893-1970 5 Limerick, Patricia Nelson, 1951- 5 Moulton, Gary E. 5 Smet, Pierre-Jean de, 1801-1873 5 Thwaites, Reuben Gold, 1853-1913 5 Brown, Dee Alexander 4 Carradine, Keith, 1949- 4 Coyote, Peter, 4 Enss, Chris, 1961- 4 Greystone Communications 4 Horan, James D. 1914-1981 4 Independent Television Service 4 Jackson, William Henry, 1843-1942 4 Joslyn Art Museum 4 McMurtry, Larry 4 Morgan, Dale Lowell, 1914-1971 4 Native American Public Telecommunications, Inc 4 Parkman, Francis, 1823-1893 4 St. Louis Art Museum 4 Thomas Gilcrease Institute of American History and Art 4 Turner, Frederick Jackson, 1861-1932 4 United States. National Park Service 4 Wheeler, Keith 4 White, Richard, 1947- 4 Worster, Donald, 1941- 4 Abbe, Jessica, 3 Abbey, Edward, 1927-1989 3 Adams, Ramon F. 1889-1976 3 Amarillo Art Center 3 Athearn, Robert G. 3 Billington, Ray Allen, 1903-1981 3 Botkin, Daniel B. 3 Bowles, Samuel, 1826-1878 3 Brooklyn Museum 3 Butler, Anne M., 1938- 3 Cardinal, Tantoo, 3 Colorado Springs Fine Arts Center 3 Coyote, Peter 3 Dale, Edward Everett, 1879-1972 3 Driggs, Howard R. 1873-1963 3 Duncan, Dayton 3 Dunlay, Thomas W., 1944- 3 Fife, Austin E. 3 Francaviglia, Richard V. 3 Frémont, John Charles, 1813-1890 3 Gardner, Eric 3 Grinnell, George Bird, 1849-1938 3 Hansen, Ron, 1947- 3 Harte, Bret, 1836-1902 3 Hyde, Anne Farrar, 1960- 3 Jackson, Donald Dean, 1919-1987 3 Kittredge, William 3 Lamar, Howard Roberts 3 Lavender, David Sievert, 1910-2003 3 Lewis, David Rich 3 Miller, Alfred Jacob, 1810-1874 3 Muir, John, 1838-1914 3 Nash, Gerald D. 3 National Audubon Society 3 National Wildlife Federation 3 Paul, Rodman W. 1912-1987 3 Paxson, Frederic L. 1877-1948 3 Phoenix Art Museum 3 Quaife, Milo Milton, 1880-1959 3 Riders in the Sky 3 Russell, Charles M. 1864-1926 3 Sacred Land Film Project 3 Smith, Henry Nash 3 Stoddard, John L. 1850-1931 3 Taft, Robert, 1894-1955 3 Turner, Erin H., 1973- 3 Twain, Mark, 1835-1910 3 Utley, Robert Marshall, 1929- 3 Verklan, Laura M. 3